• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2022.05a
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• pp.539-541
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• 2022

Due to the prolonged covid-19 pandemic, the rate of closure of the self-employed is rapidly increasing, and the economic damage is increasing. In this study, we provide various information such as the degree of overcrowding by region and industry through the analysis of business districts in Chungcheongbuk-do due to the outbreak of covid-19, and analyze the start-up environment by using public data to help start-up success and business stability. It provided support for self-employed people to use as basic data when starting a business.

• Journal of the Korean Regional Science Association
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• v.37 no.4
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• pp.3-19
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• 2021

This study examines changes in commercial space in Seoul from 1999 to 2016 by investigating operating periods of commercial businesses. This study finds that the characteristics of spatial changes in commercial districts are classified by the following two major points. First, the traditional CBD and Yeongdeung-po commercial districts show that both ages (survival duration) of operating commercial businesses and operating periods of market-exit businesses have changed to become longer than the average values of the two business types in Seoul. In contrast, the Gangnam and the Mapo commercial districts show that the operating periods of survived and closed commercial businesses have changed to become shorter over time. The difference suggests that survival-exit relations of businesses are closely related to the characteristics of each commercial district. In addition, this study shows that each commercial district has experienced dynamic changes in the intensity of commercial activities and the hierarchy of commercial space. Finally, this study indicates that public policies for commercial space should consider survival-exit dynamics of commercial activities in commercial districts.

• Proceedings of the Korea Contents Association Conference
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• 2006.05a
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• pp.239-241
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• 2006

This research implemented VoIP phone for Advertisement service that used display(LCD) of internet telephone. If it is advertised using this advertisement service model, We don't make payment printing cost and delivering cost for advertisement. And the advertisement using VoIP phone can deliver to customers in real-time that high grade advertising exposure. The customer can use information about opening and closing store in real-time. Hence, in this paper we suggest more efficient advertisement technique using VoIP phone for Advertisement service.